3:00 String theory and Geometry (1986)
55:31 Gauge Theories and the Jones Polynomial (August 25, 1990)
1:52:44 On the work of Witten by Faddeev
Source: https://www.math.stonybrook.edu/Videos/Einstein/456-19900825-Witten.html
The proceedings can be found here: https://www.mathunion.org/icm/proceedings